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https://hdl.handle.net/2440/55177
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Type: | Conference paper |
Title: | Comparison of the Performance of Double-Step Rectangular Dielectric Resonator Antennas |
Author: | Almpanis, G. Fumeaux, C. Vahldieck, R. |
Citation: | The proceedings of the International Conference on Electromagnetics in Advanced Applications (ICEAA 07), 2007: pp.887-890 |
Publisher: | IEEE |
Publisher Place: | Online |
Issue Date: | 2007 |
ISBN: | 1424407672 9781424407675 |
Conference Name: | International Conference on Electromagnetics in Advanced Applications (2007 : Torino, Italy) |
Statement of Responsibility: | G. Almpanis, C. Fumeaux and R. Vahldieck |
Abstract: | In this paper, numerical and experimental investigations on various wideband Dielectric Resonator Antennas (DRAs) are reported. The coaxial-fed two-step rectangular DRA has been proposed as a wideband antenna, characterized by easy fabrication, wide impedance bandwidth and stable radiation characteristics. Its operation relies on the excitation of multiple modes at nearby frequencies in order to obtain a wide impedance bandwidth through the overlap of their resonances. Here, this operational concept is further enhanced. It is shown that the impedance bandwidth of ‘flipped’ double-step DRAs is significantly improved, due to the decrease of the radiation Q-factor of the excited modes. Therefore, similar DRAs may present a very different performance for the same feeding scheme and excited modes, depending on the DRAs’ orientation with respect to the groundplane. |
DOI: | 10.1109/ICEAA.2007.4387447 |
Published version: | http://dx.doi.org/10.1109/iceaa.2007.4387447 |
Appears in Collections: | Aurora harvest 5 Electrical and Electronic Engineering publications |
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